Water Health Check Report
Tucson, AZ
City of Tucson · Groundwater source
Excellent — with 1 concern
City of Tucson meets all federal legal limits but 1 contaminant exceeds EWG health guidelines. Lead levels within limits at treatment plant
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Contaminants tested
31 total · 1 above EWG guideline| Contaminant | Level | Status |
|---|---|---|
PFBA (perfluorobutanoic acid) CAS 375-22-4 | 8.1 ppt | Above guideline |
Lithium CAS 7439-93-2 | 21.4 ppb | Within limits |
Fluoride CAS 16984-48-8 | ND ppm | Within limits |
Total trihalomethanes (TTHMs) CAS Various | ND ppb | Within limits |
ND NTU | Within limits | |
Copper CAS 7440-50-8 | ND ppm | Within limits |
Chlorine (residual) CAS 7782-50-5 | ND ppm | Within limits |
ADONA (4,8-dioxa-3H-perfluorononanoic acid) CAS 919005-14-4 | ND | Not detected |
PFBS (perfluorobutane sulfonic acid) CAS 375-73-5 | ND | Not detected |
PFTrDA (perfluorotridecanoic acid) CAS 72629-94-8 | ND | Not detected |
PFPeA (perfluoropentanoic acid) CAS 2706-90-3 | ND | Not detected |
PFPeS (perfluoropentane sulfonic acid) CAS 2706-91-4 | ND | Not detected |
6:2 FTS (6:2 fluorotelomer sulfonic acid) CAS 27619-97-2 | ND | Not detected |
4:2 FTS (4:2 fluorotelomer sulfonic acid) CAS 757124-72-4 | ND | Not detected |
8:2 FTS (8:2 fluorotelomer sulfonic acid) CAS 39108-34-4 | ND | Not detected |
PFHpS (perfluoroheptane sulfonic acid) CAS 375-92-8 | ND | Not detected |
PFTA (perfluorotetradecanoic acid) CAS 376-06-7 | ND | Not detected |
ND | Not detected | |
HFPO-DA / GenX (hexafluoropropylene oxide dimer acid) CAS 13252-13-6 | ND | Not detected |
ND | Not detected | |
PFUnA (perfluoroundecanoic acid) CAS 2058-94-8 | ND | Not detected |
PFHpA (perfluoroheptanoic acid) CAS 375-85-9 | ND | Not detected |
PFHxS (perfluorohexane sulfonic acid) CAS 355-46-4 | ND | Not detected |
PFNA (perfluorononanoic acid) CAS 375-95-1 | ND | Not detected |
PFOS (perfluorooctane sulfonate) CAS 1763-23-1 | ND | Not detected |
PFOA (perfluorooctanoic acid) CAS 335-67-1 | ND | Not detected |
PFDA (perfluorodecanoic acid) CAS 335-76-2 | ND | Not detected |
PFDoA (perfluorododecanoic acid) CAS 307-55-1 | ND | Not detected |
PFHxA (perfluorohexanoic acid) CAS 307-24-4 | ND | Not detected |
ND | Not detected | |
ND | Not detected |
Filter recommendation
1 contaminant above guidelines. Here's what removes it.
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Data sources
Status flags compare detected levels against both EPA legal limits and EWG health-based guidelines—which are stricter and science-derived, independent of political feasibility.